Rödel, M.-O., J. Kosuch, M. Veith & R. Ernst (2003): First record of the genus Acanthixalus Laurent, 1944 from the Upper Guinean rain forest, West Africa, with the description of a new species. – Journal of Herpetology, 37: 43-52.

Rödel, M.-O. & R. Ernst (2002): A new Phrynobatrachus from the Upper Guinean rain forest, West Africa, including a description of a new reproductive mode for the genus. – Journal of Herpetology, 36: 561-571.